New Scientist: Antibiotics given to cattle can have far-reaching effects in an ecosystem, changing the make-up of microbes in the guts of dung beetles and increasing methane emissions from faeces.
Researchers have analysed dung and the ecosystem it supports from cattle given a course of the antibiotic tetracycline. Such antibiotics are commonly given to livestock to prevent diseases and stimulate growth, even though this can lead to the development of drug-resistant bacteria.
The team found that the dung...